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Immobilization and Mineralization of Nitrogen in Several Organic Fractions of Soil
Author(s) -
Stewart B. A.,
Porter L. K.,
Johnson D. D.
Publication year - 1963
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1963.03615995002700030026x
Subject(s) - chemistry , mineralization (soil science) , straw , hydrolysate , incubation , nitrogen , fraction (chemistry) , nitrate , environmental chemistry , chromatography , hydrolysis , organic chemistry , inorganic chemistry , biochemistry
Straw and N fertilizers were incubated in soil and changes in content of some organic N fractions were measured. Ammonia and nitrate N, as well as the N in several organic fractions, were determined to detect changes in the organic fractions which could be related to increases or decreases in the inorganic N. Most of the N immobilized during incubation with soil and straw was found in the nondistillable acid‐soluble N fraction of the hydrolysate. Although the nondistillable acid‐soluble N fraction constituted only about one‐half of the total organic N, studies using N 15 showed that about about three times as much fertilizer N went into this fraction during immobilization as went into the distillable acid‐soluble and acid‐insoluble N fractions combined.